You can get new sensors if you want to keep your stock wheels intact.
New sensors from the dealer are over $60 each x 5 (the spare has one too!)
I got them from Amazon for $150 for 5 shipped
P.S. they are brand specific so make sure they are compatible!!!

Most lifted JKers I know leave their TPMS off the new wheels. The shops do charge an extra $10-$20 per wheel to switch them over.
My stock wheels are 16x7 steel, so I'd be lucky to get $1 from a recycling shop!!